Hello,we have an Microsoft Exchange Mailserver 2013 and want to use one from the Emails for the Ticket System. We have two servers, that run in the same time, so if one goes down, the other continues working alone. So we can not setup an email address with Host: IP Address. Is it possible to use for host mail.subdomain.domain.de ?Are there any other settings that have to be done to setup the email address?Thanks!Best regards,Nikolay Dimitrov